Bet you cant even avoid the bloody
olympics up there either!
Austrian daredevil Felix Baumgartner is closing on the world's highest free-fall record after jumping yesterday from 96,640ft (29,455m). Baumgartner plummeted at a rate of 364.69 miles per hour (586.92km/h) during his second jump over Roswell, New Mexico, which lasted 3 minutes and 40 seconds. Back in March, he made his first …
Orbital velocity of ISS is not so important in this case. Once you pushed something towards Earth from the ISS it will eventually fall down, the question is how long will it take to cross the 300 or so km from the station until the atmosphere starts to bite...
If you jump at 3 m/s it will take a bit more than 27 hours, so you will need to take a big tank of O2 with you and, maybe, a Kindle.
If you jumped from a platform that is in a circlar (i.e. elliptical) orbit, you'd just go into an adjacent orbit whose shape is a slightly different ellipse.
You wouldn't just keep descending or ascending. To do that takes a load of work.
So after 27 hours your new orbit will have diverged from the original somewhat in its position, but it will not have accumulated a gross difference in height or speed.
If you find you're going faster / lower when over the UK, chances are you'll be going slower and/or higher 45 minutes later when you're over Oz.
I thought that Jaws and the little blonde girl stayed on the station drinking champagne while it disintegrated? Long time since I saw Moonraker though.
Anyway, it's worth knowing that NASA actually planned for this sort of thing. Imagine how desperate you'd have to be to try using this;
That must have been an incredible andrenalin rush the moment he opened to door to that capsule. He was then able to sit on the edge of the door and observe the earth in a manner that only the Astronauts know.
Kudos to Felix. It's a rich mans exercise but still requires a bucket load of courage.
Red bull have one slightly niche product what occupies say at most a tenth the shelf space of bottled water or coca cola in most outlets I know. They're not even the most popular murky-tasting energy drink, yet they seem to have a limitless budget for bankrolling extreme sports, motor sports (how many teams in F1 this year?), global tv advertising not to mention the less visible stuff. Where does all the cash come from? Are they a front for SMERSH?
It has been discussed at various conferences and meetings.
Normal skydivers hit about 120mph when the size of the drag force equals the acceleration due to gravity. But with no *effective* atmosphere to stop you speeding up you continue to accelerate (BOTE suggests you can hit M3 in a dive. Something normally experienced by X15 pilots or SR71 crews)
The fun really starts when you hit more dense air (falling at that speed the air density rise *quickly*) and estimates were you'd hit about -7g (eyeballs out) for 10s of seconds before continuing to slow at a few g
If you're the sort of person whose heard the description and is thinking "I live for this s**t" then it's probably for you.
from the man who did the first,and so far, the highest/greatest distance away jump.
I have seen a photo of this Johnny Come Lately with the original Space Jumper
Much would have been learned from the Pioneer.
The Pioneer did it as part of the testing programme for Apollo Moon Landing affair the Yanks had to show those Commies who was the smartest and best etc.
so, as the subject says, what ever happened to terminal velocity? many understand that to be 120mph or so... so how/why did he achieve this high speed?
does terminal velocity have a height or atmosphere thickness limit and the higher you go, the higher terminal velocity is?
Within the atmosphere once you step out you have 2 forces acting on you. Gravity makes you fall faster but there is also *drag* from the air hitting your body. It's called dynamic pressure. It's what you feel if you stick you hand out of a car window palm facing the direction of travel face on.
Give the average surface area of a person it works to be about 120mph which is "Terminal velocity.". It's the *equilibrium* speed between the 2 forces and is an application of Stokes law.
But now you're *outside* the sensible atmosphere so there is no *balance* and gravity can keep on accelerating you. The USAF officers in the early 1960's (Project "Man High" IIRC) are believed to have hit M1 *before* they hit the the sensible atmosphere and started to decelerate *hard* back down to the equilibrium speed for their mass and surface area.
An interesting case would be for a body like the Moon, with virtually *no* atmosphere to stop you (but a much weaker gravitational pull) . How high could you fall from? With no equilibrium you could hit pretty fast .
Biting the hand that feeds IT © 1998–2019